What a nice model car! — Thanks a lot. It me the whole day to make it.

The duty of Project Hope is to help poor children, isn’t it?–Yes, it has built many schools ____ those children can study happily.[ ]

you your dictionary?—No. So I have to buy a new one today.

After eight hours’ hard work, the firemen the big fire at last.

We are not allowed ______ in our school.